Be Nice is a way for you to support development of this plugin without donating hard cash. Under Options » AdSense you can select to donate a percentage of your ad space to development of this plugin. It won't make me rich (I wish) but it does help guarantee development time and played an important role in putting aside time for v3.x rewrites.
Nothing. It's entirely up to you: the plugin will function identically whether you donate ad space or not.
If you are able please consider making a PayPal donation instead.
Food, clothes, course books, etc. I'm currently studying this, here.
For some ad networks (e.g. WidgetBucks, Adroll, etc.) the dimensions of ads are managed through the online interface. There is no way to change these settings from within the WordPress system that would work reliably. You do not have to update these dimension settings if you update your Ad online, however, it can be useful in correctly identifying 'Alternate Ads' for AdSense blocks.
No, and Yes. While the original purpose of being able to modify colours etc. without digging into code is now gone (although still supported) there are other advantages to AdSense Manager. For example: positioning. Additionally there are some plans afoot to provide intelligent ad placing methods to make all this work even better.
There is a (nice tutorial here)[http://www.tamba2.org.uk/wordpress/adsense/] which explains positioning using code in template files. You can use this together with AdSense Manager: just place the ad code tags where it says "place code here".
To revert to an old copy of your Ad database, go to your Dashboard and add ?adsensem-revert-db=X to your URL. Replace X with the major version that you want to revert to.
If the latest version to work was 2.1, enter: ?adsensem-revert-db=2
Load the page and AdSense Manager will revert to that version of the database and re-attempt the upgrade.




